A New Geranylated 2-Arylbenzofuran from Morus alba

Objective To study the chemical constituents from the root barks of Morus alba. Methods Various chromatographic techniques were used to separate the constituents and their structures were elucidated on the basis of extensive spectroscopic interpretation. Results Six compounds were isolated from the root barks of M. alba. The structure of new compound, named as albafuran D (1), was established together with known compounds sanggenon H (2), kuwanon E (3), kuwanon U (4), kuwanon F (5), and benzokuwanon E (6). Conclusion Compound 1 is a new geranylated 2-arylbenzofuran.